rodi tds

There are always a lot of questions regarding which RO/DI setup do I need, how many stages, how do I know when to change filters/membranes, I’m getting a weird TDS value, etc. Hopefully this clarifies a few things and helps some of you out one day. My first recommendation would be to find the...

I've been struggling with red cyano again; and my corals haven't been happy for about a month. The issue I found is that my RODI membrane is putting our 36 TDS and the DI resin is only polishing it down to 8 TDS. I'm not sure how I missed this. So I've been cleaning out the cyano with water...

What is everyone here using to test the TDS of their RO/DI? Any tips or experiences concerning the reliability of cheap TDS pens? Would you trust a cheap HM Digital TDS-3 Handheld TDS Meter? Plenty of positive reviews, but a reviewer pointed out: The Hanna Pure Water Tester looks like a better...

Hi All, I won't call myself new to reefing, but I have been out of it for quite some time so for this purpose, lets just call me new! I purchased a BRS 4 stage value plus RODI System and added the water saver upgrade to make it 100 gpd. I had a TDS meter that I purchased from Amazon several...